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- Title
A rare case of hypoplastic coronary sinus partially draining into right superior vena cava: A case report.
- Authors
Kumar, Vivek; Kumar, Viveka; Arora, Vanita
- Abstract
Background: The hypoplastic coronary sinus (CS) is a rare anomaly of the cardiac venous system, wherein some of the tributaries fail to join the CS. These tributaries usually drain into atrial chambers through dilated thebesian channels. We report the first case where the tributaries are draining into the right superior vena cava (SVC). Case summary: A case of ischemic cardiomyopathy with severe LV systolic dysfunction with NYHA class III symptoms was taken for CRTD implantation. CS venogram after direct cannulation from left subclavian access revealed a hypoplastic CS. The part of CS beyond the attachment of the oblique vein of the left atrium to CS (distal to the posterolateral vein) formed a common channel and was draining into the right‐sided SVC. The posterolateral vein was of sufficient caliber so that an left ventricle (LV) lead could be implanted, and the CRTD procedure could be completed. Discussion: Hypoplastic CS though has no pathological significance in the normal population but for CRT it can become a significant limitation. Tributaries of CS draining into right SVC are the rarest of the finding, the channel draining most likely is a remnant of the splanchnic plexus around the embryonic foregut that usually has a temporary communication with cardinal veins during intrauterine growth. This communication somehow has persisted and resulted in a channel between coronary vein and the SVC, which may be referred to as coronary veno‐cardinal vein.
- Subjects
CORONARY arterial radiography; CARDIAC pacing; CORONARY circulation; IMPLANTABLE cardioverter-defibrillators; VENOGRAPHY; VENA cava superior; CORONARY artery abnormalities; DISEASE complications
- Publication
Pacing & Clinical Electrophysiology, 2021, Vol 44, Issue 1, p178
- ISSN
0147-8389
- Publication type
Article
- DOI
10.1111/pace.14116